Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!batcomputer!cornell!vax5.cit.cornell.edu!wuly
From: wuly@vax5.cit.cornell.edu
Newsgroups: comp.graphics
Subject: Radiosity Image Correction
Message-ID: <1991May27.135349.5072@vax5.cit.cornell.edu>
Date: 27 May 91 13:53:49 EDT
Distribution: comp
Organization: CIT, Cornell University
Lines: 17

With regard to the "too dark" radiosity results discussion:

After talking with a grad student in computer graphics here at cornell:
	(1) everybody using radiosity algorithms has this problem.
	(2) a good way to assign colors to radiosity results is to do it
	    linearly, and then essentially gamma-correct the resulting image.

I have found that gamma correction does wonders for me, and my images are
darker than most due to inaccurate (too low) energy transfers (it made
calculations very fast, though).  For those of you using more accurate
routines, a gamma correction style transformation during color assignment
should be helpful.

For my case, a gamma correction of 1.8 looks nice, but of course that depends
on the monitor and the image.

wuly@vax5.cit.cornell.edu